133 lines
		
	
	
	
		
			4 KiB
			
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			133 lines
		
	
	
	
		
			4 KiB
			
		
	
	
	
		
			C++
		
	
	
	
	
	
// Copyright (c) 2014 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "atom/browser/ui/views/menu_delegate.h"
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#include "atom/browser/ui/views/menu_bar.h"
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#include "atom/browser/ui/views/menu_model_adapter.h"
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#include "content/public/browser/browser_thread.h"
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#include "ui/views/controls/button/menu_button.h"
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#include "ui/views/controls/menu/menu_item_view.h"
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#include "ui/views/controls/menu/menu_runner.h"
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#include "ui/views/widget/widget.h"
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namespace atom {
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MenuDelegate::MenuDelegate(MenuBar* menu_bar)
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    : menu_bar_(menu_bar),
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      id_(-1) {
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}
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MenuDelegate::~MenuDelegate() {
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}
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void MenuDelegate::RunMenu(AtomMenuModel* model, views::MenuButton* button) {
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  gfx::Point screen_loc;
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  views::View::ConvertPointToScreen(button, &screen_loc);
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  // Subtract 1 from the height to make the popup flush with the button border.
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  gfx::Rect bounds(screen_loc.x(), screen_loc.y(), button->width(),
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                   button->height() - 1);
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  id_ = button->tag();
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  adapter_.reset(new MenuModelAdapter(model));
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  views::MenuItemView* item = new views::MenuItemView(this);
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  static_cast<MenuModelAdapter*>(adapter_.get())->BuildMenu(item);
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  menu_runner_.reset(new views::MenuRunner(
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      item,
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      views::MenuRunner::CONTEXT_MENU | views::MenuRunner::HAS_MNEMONICS));
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  ignore_result(menu_runner_->RunMenuAt(
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      button->GetWidget()->GetTopLevelWidget(),
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      button,
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      bounds,
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      views::MENU_ANCHOR_TOPRIGHT,
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      ui::MENU_SOURCE_MOUSE));
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}
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void MenuDelegate::ExecuteCommand(int id) {
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  adapter_->ExecuteCommand(id);
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}
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void MenuDelegate::ExecuteCommand(int id, int mouse_event_flags) {
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  adapter_->ExecuteCommand(id, mouse_event_flags);
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}
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bool MenuDelegate::IsTriggerableEvent(views::MenuItemView* source,
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                                      const ui::Event& e) {
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  return adapter_->IsTriggerableEvent(source, e);
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}
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bool MenuDelegate::GetAccelerator(int id, ui::Accelerator* accelerator) const {
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  return adapter_->GetAccelerator(id, accelerator);
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}
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base::string16 MenuDelegate::GetLabel(int id) const {
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  return adapter_->GetLabel(id);
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}
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const gfx::FontList* MenuDelegate::GetLabelFontList(int id) const {
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  return adapter_->GetLabelFontList(id);
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}
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bool MenuDelegate::IsCommandEnabled(int id) const {
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  return adapter_->IsCommandEnabled(id);
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}
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bool MenuDelegate::IsCommandVisible(int id) const {
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  return adapter_->IsCommandVisible(id);
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}
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bool MenuDelegate::IsItemChecked(int id) const {
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  return adapter_->IsItemChecked(id);
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}
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void MenuDelegate::SelectionChanged(views::MenuItemView* menu) {
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  adapter_->SelectionChanged(menu);
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}
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void MenuDelegate::WillShowMenu(views::MenuItemView* menu) {
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  adapter_->WillShowMenu(menu);
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}
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void MenuDelegate::WillHideMenu(views::MenuItemView* menu) {
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  adapter_->WillHideMenu(menu);
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}
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void MenuDelegate::OnMenuClosed(views::MenuItemView* menu,
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                                views::MenuRunner::RunResult result) {
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  // Only switch to new menu when current menu is closed.
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  if (button_to_open_)
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    button_to_open_->Activate(nullptr);
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  delete this;
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}
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views::MenuItemView* MenuDelegate::GetSiblingMenu(
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    views::MenuItemView* menu,
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    const gfx::Point& screen_point,
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    views::MenuAnchorPosition* anchor,
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    bool* has_mnemonics,
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    views::MenuButton**) {
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  // TODO(zcbenz): We should follow Chromium's logics on implementing the
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  // sibling menu switches, this code is almost a hack.
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  views::MenuButton* button;
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  AtomMenuModel* model;
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  if (menu_bar_->GetMenuButtonFromScreenPoint(screen_point, &model, &button) &&
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      button->tag() != id_) {
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    bool switch_in_progress = !!button_to_open_;
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    // Always update target to open.
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    button_to_open_ = button;
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    // Switching menu asyncnously to avoid crash.
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    if (!switch_in_progress) {
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      content::BrowserThread::PostTask(
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          content::BrowserThread::UI, FROM_HERE,
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          base::Bind(&views::MenuRunner::Cancel,
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                     base::Unretained(menu_runner_.get())));
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    }
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  }
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  return nullptr;
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}
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}  // namespace atom
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